Luke Bronin beat out 14-term incumbent John Larson for the Democratic nomination for Connecticut’s 1st Congressional District on Tuesday night — and the margins were not tight, even across different demographic groups in the district. Bronin received more than 29,600 votes from constituents in the district, an obvious win compared to Larson’s 17,930 votes. This trend held steady in most towns, regardless of its race, income and age makeup, a fac…